December Weather in Barao de Sao Joao, Portugal

Last updated: August 27, 2025

In December, the average temperature in Barao de Sao Joao, Portugal hovers around 13°C (56°F). Expect a chilly minimum of 3°C (38°F) and a pleasant maximum of 21°C (69°F). With an average precipitation of 49 mm (1.9 in) spread over 8 days, you might want to carry an umbrella. Additionally, the air is quite humid, with an average humidity level of 81%—perfect for that cozy vibe!

December Temperature in Barao de Sao Joao

In December in Barao de Sao Joao, the average temperature is 13°C (56°F). Maximums can reach 21°C (69°F), and minimums can drop as low as 3°C (38°F). Overall, it's a mild time to visit, so packing layers is advisable for your travel plans.

December Weather in Barao de Sao Joao: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Barao de Sao Joao, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Barao de Sao Joao, December typically has an average temperature of 13°C (56°F), with highs reaching up to 21°C (69°F) and lows dropping to around 3°C (38°F).

Data source: Temperature data for Barao de Sao Joao generated using information from the Copernicus Climate Change Service.

December Precipitation in Barao de Sao Joao

In Barao de Sao Joao in December, the precipitation amount is 49 mm (1.9 in) spread over 8 days.

December Precipitation Trends in Barao de Sao Joao

The chart displays monthly precipitation patterns in Barao de Sao Joao, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Barao de Sao Joao, December typically receives around 49 mm (1.9 inches) of precipitation spread over approximately 8 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in Barao de Sao Joao

In Barao de Sao Joao in December, humidity is 81%. With an average temperature of 13°C (56°F), this humidity feels like a blanket of damp air that clings to your skin, making it essential to pack breathable clothing and stay hydrated while exploring.

December Average Humidity in Barao de Sao Joao

This chart illustrates the average monthly humidity levels in Barao de Sao Joao, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Barao de Sao Joao is approximately 81%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Barao de Sao Joao

In Barao de Sao Joao in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Barao de Sao Joao, you can check the information here.

Maximum UV Index Levels in Barao de Sao Joao for December

The chart shows the monthly maximum UV Index (UVI) for Barao de Sao Joao in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Barao de Sao Joao typically reaches 3, which falls under the moderate exposure category.

Data source: Barao de Sao Joao December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How December Weather in Barao de Sao Joao Compares to Other Months

Weather in Barao de Sao Joao varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Barao de Sao Joao, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Barao de Sao Joao, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	11°C (53°F)	27 mm (1.1 inches)	80%	moderate
February Weather	13°C (56°F)	45 mm (1.8 inches)	73%	moderate
March Weather	14°C (57°F)	75 mm (2.9 inches)	71%	high
April Weather	15°C (60°F)	58 mm (2.3 inches)	69%	very high
May Weather	18°C (65°F)	20 mm (0.8 inches)	69%	very high
June Weather	20°C (67°F)	8 mm (0.3 inches)	67%	extreme
July Weather	21°C (70°F)	3 mm (0.1 inches)	69%	very high
August Weather	22°C (72°F)	1 mm (0.0 inches)	68%	very high
September Weather	21°C (71°F)	7 mm (0.3 inches)	71%	very high
October Weather	19°C (66°F)	32 mm (1.3 inches)	75%	high
November Weather	15°C (59°F)	52 mm (2.1 inches)	78%	moderate
December Weather	13°C (56°F)	49 mm (1.9 inches)	81%	moderate